WAS MAKING A LEFT HAND TURN WHEN ANOTHER VEHICLE HIT CONSUMER'S VEHICLE ON DRIVER'S SIDE & CAUSED VEHICLE TO SLIDE DOWN THE ROAD ONTO OTHER SIDE OF STREET. UPON IMPACT, DRIVER'S AIR BAG FAILED TO DEPLOY. DRIVER HIT HEAD ON STEERING WHEEL. PASSENGER WAS UNINJURED. BOTH HAD ON SEAT BELTS. NO EMERGENCY ROOM TREATMENT. *AK